Air Compressor Heating for EV Excess Energy Dissipation
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Solution Overview
Problem
Electric vehicles face challenges in handling excess energy when the battery is fully charged, as they lack a heat-generating component to provide sufficient heating and auxiliary braking, which strains the cooling system.
Innovation Solution
An energy management system that includes an electric machine connected to an air compressor, an air heating arrangement, and a flow injecting arrangement to dissipate electric power as heated air, reducing the need for a large cooling system and enhancing braking capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a vehicle uses an electric machine and battery instead of internal combustion engine, then environmentally harmful exhaust gas emission is reduced, but the vehicle lacks heat generating capability and struggles to handle excess energy when battery is fully charged
Solution Approach 1:
The patent converts excess electrical energy that cannot be stored in the battery into thermal energy through the air heating arrangement. The electric machine drives the air compressor to compress air, and the compression heat plus additional electric heating provides useful thermal energy for vehicle heating needs, thus converting potentially wasted energy into a beneficial resource.
Solution Approach 2:
The air heating arrangement serves multiple functions: it provides heating for vehicle components, dissipates excess electrical energy when the battery is fully charged, and can supply heated air for cabin heating. This multi-functional design addresses both the heat generating capability deficit and the excess energy handling problem simultaneously.
2Object-affected harmful factors
If the vehicle lacks heat generating capability, then exhaust gas emission is reduced, but sufficient heating of components during operation cannot be provided
Solution Approach 1:
The patent replaces the mechanical heat generation system (internal combustion engine) with an electrical-thermal system. The electric machine drives the air compressor mechanically, and the air heating arrangement converts electrical energy into thermal energy to heat components, eliminating the need for a combustion-based heating system while maintaining environmental benefits.
3Device complexity
If the cooling capacity is limited in electric vehicles, then the system is simpler, but auxiliary braking functionality becomes a dimensioning factor that strains the cooling system
Solution Approach 1:
The patent converts the thermal energy generated during auxiliary braking into a useful resource. Instead of merely dissipating braking heat as waste that strains the cooling system, the air heating arrangement captures and utilizes this thermal energy for vehicle heating needs, effectively turning a cooling system burden into a heating source.
4Quantity of substance
If the battery is fully charged, then energy storage capacity is maximized, but excess electric power cannot be delivered to the battery
Solution Approach 1:
The patent changes the energy storage parameter from electrical energy (battery) to thermal energy (heated air). When the battery reaches full charge, the system redirects excess electrical power to the air heating arrangement, which converts it into thermal energy. This parameter transformation allows continuous energy utilization without battery overcharging.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively dissipates excess electric energy as heated air, reducing cooling system strain and increasing braking capacity while being environmentally friendly, with the air compressor providing high-pressure and high-temperature air for efficient heat transfer.
Implementation Method 1
an air compressor arranged in an air flow channel of the energy management system, the air compressor being configured to receive and pressurize air
Implementation Method 2
an air heating arrangement positioned in the air flow channel in fluid communication with the air compressor, wherein the air heating arrangement is arranged to heat air present in the air flow channel
Implementation Method 3
The flow injecting arrangement can thus comprise a pump or injector to supply the flow of fluid or, as will be described in further detail below, be arranged with an opening or orifice admitting the flow of fluid by means of a pressure difference between an inlet side and on an exterior of the flow injecting arrangement
Data Source
AI summary
An energy management system, comprising an electric machine electrically connected to an electric source, an air compressor arranged in an air flow channel of the thermal management system, the air compressor being configured to receive and pressurize air, wherein the air compressor is mechanically connected to, and operable by, the electric machine, an air heating arrangement positioned in the air flow channel in fluid communication with the air compressor, wherein the air heating arrangement is arranged to heat air present in the air flow channel, and a flow injecting arrangement positioned downstream the air compressor in the air flow channel, wherein the flow injecting arrangement comprises a portion configured to admit a flow of fluid into the flow of air exhausted from the air compressor.